Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 21,509	$ 22,998	$ 23,377
Currency translation adjustments, net of tax	925	525	(1,426)
Comprehensive income	$ 22,434	$ 23,523	$ 21,951